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1996 (1)
1989 (1)
1Author    Dirk Johrendt, Albrecht MewisRequires cookie*
 Title    The Electronic Structure o f Ternary Transition Metal Pnictides. I. AlBo-Variants  
 Abstract    The electronic structure and bonding of some ternary AlB2-type compounds AMX (A=2a-, X=5b-element, M=transition metal) were studied by means of Extended-Hückel and TB-LMTO-ASA calculations. Previous geometric stability criteria of the AIB2 structure have been extended, and reasons for some structural peculiarities and distortions are given. A simple orbital interaction scheme based on local symmetry is used as starting point to investigate the electronic properties of these compounds, whereas the band structures of the ZrBeSi-type SrPdAs and the Peierls-distorted variants CaPdAs and BaPdP are described in more detail. The results of calculations and resistivity measurements are discussed within the scope of Zintl's concept under consideration of the transition metal d-orbitals. It turns out that these solids can be described as metallic Zintl compounds. 
  Reference    Z. Naturforsch. 51b, 655—664 (1996); eingegangen am 6. November 1995 
  Published    1996 
  Keywords    Ternary Pnictides, Electronic Structure, Stability Criteria, Zintl Concept 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0655.pdf 
 Identifier    ZNB-1996-51b-0655 
 Volume    51 
2Author    Wolfgang Blase, G.Erhard CordierRequires cookie*
 Title    D ie Kristallstruktur von Na3Ga8Sn3 und die Interpretation der Bindungsverhältnisse auf der Basis der Wadeschen Regeln und des Zintlkonzeptes The Crystal Structure of Na3G a8Sn3 and the Interpretation of its Chemical Bonding According to W ade's Rules and the Zintl Concept  
 Abstract    The crystal structure of Na3G a8Sn3 (a = 1532.7(7), b = 890.7(6), c = 1224.9(8) pm; ß = 129.6(2)°, space group C2/m) contains G a l2 icosahedra and puckered layers of condensed six-m em bered Ga/Sn rings, which are interconnected by additional Ga/Sn atoms to a three-dim en­ sional framework. The Na content of the com pound correlates with the num ber of electrons necessary for a stable electron configuration in the anionic partial structure. 
  Reference    Z. Naturforsch. 44b, 1011—1014 (1989); eingegangen am 10. April 1989 
  Published    1989 
  Keywords    Sodium -Gallium -Stannides, Crystal Structure, W ade's Rules, Zintl Concept 
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 TEI-XML for    default:Reihe_B/44/ZNB-1989-44b-1011.pdf 
 Identifier    ZNB-1989-44b-1011 
 Volume    44